Overflowing coffee maker

If the coffee grounds are overflowing, you can try using less if a reusable mesh filter is in place. If it's just a disposable K-cup you're using, the recommendation is to use each one only once to prevent this.
Keurig

Who owns the brewer. Usually the OCS supply does the maintenance. Office Coffee Systems sell and service the brewers...the service if for free. Does it have a label on the side or anywhere. If it is overflowing, is it out of the brew basket in to the pot?...There are a couple reasons for that. Is it a water line model?. If it is a pour over, it is human error. If it is a water line model it is probably a leaky inlet water valve. http://www.pamasco.com/bloomfieldsolenoidvalvesandrelatedparts.aspx

see deliming tip for bunn cwtf

I don't suppose you are attempting the cleaning with the basket removed are you? I believe the basket would open the carafe's inlet port to allow water in.

You should make sure you are measuring in the same cups they are alot of coffee makers measure in 6oz cups (I don't know why) but they do so over 10 cups that would be 20 oz difference

contact Bunn directly for help.

http://www.bunnomatic.com/retail/service/contact.html

Have you tried resetting the brew volume(make sure board is not set to lock).
The only other thing I can think of is replacing the timer board, because its not telling the solenoid to stop brewing.

Replace the filter basket - costs about $6.00

It sounds like the sprayhead is missing. It looks like a little shower head and is screwed on where the water comes out.